[orca] Just rely on the superscript's clearTextSelection() for web content

[Joanmarie Diggs <joanied src gnome org>]

commit 4c49655e4fd7fb92cee3197f58d1c8858b6482c7
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Mon Aug 26 15:59:07 2019 -0400

    Just rely on the superscript's clearTextSelection() for web content
    
    We were doing extra work to clear the text selection in web content
    in anticipation of being able to have AT-SPI2-driven text selection
    for web content. It turns out we cannot due to limitations in ATK
    and assumptions of implementors. Therefore, don't bother doing the
    extra work until we have a need to.

 src/orca/scripts/web/script_utilities.py | 16 ----------------
 1 file changed, 16 deletions(-)
---
diff --git a/src/orca/scripts/web/script_utilities.py b/src/orca/scripts/web/script_utilities.py
index fa4e39271..9cfdd557d 100644
--- a/src/orca/scripts/web/script_utilities.py
+++ b/src/orca/scripts/web/script_utilities.py
@@ -4098,22 +4098,6 @@ class Utilities(script_utilities.Utilities):
 
         return rv
 
-    def clearTextSelection(self, obj):
-        super().clearTextSelection(obj)
-        if self.isDocument(obj):
-            return
-
-        # For performance reasons. If clearing the selection on a table doesn't
-        # clear it, file a bug against the user agent in question.
-        if self.getTable(obj):
-            return
-
-        try:
-            for child in obj:
-                self.clearTextSelection(child)
-        except:
-            pass
-
     def clearCaretContext(self, documentFrame=None):
         self.clearContentCache()
         documentFrame = documentFrame or self.documentFrame()